Car truck



May 7, 1929- B. W. KADEI. 1,711,568

CAR TRUCK Filed Aug. '16,' 1927 Patented l `May 7, 1929,.

PATENT OFFICE.

BYERS W. KABEL, F BALTIMORE, MARYLAND.

CAR TRUCK.

` Application led August 16, 1927. Serial No.` 213,340.

This invention relates to railway trucks and more particularly to the construction of the side frames thereof whereby increased strength is secured as well as increased spring capacity provided.

The principal object ofmy invention, genorally considered, is the improvement in car trucks. particularly the construction of the side frames thereof, whereby provision is made for supporting an increased number of bolster springs, the outer of which are positioned at a higher level than the inner or maingroup thereof, said outer springs being supported on embossments providing at the same time for increasing the strength of the tension member.

An important object of my invention is the provision of car trucks formed with side frames in which the tension member between the bolster guide columns is formed with a central horizontal portion and inclined end portions, the junctions between said central and end portions being reinforced by upward embossments, the upper surfaces of which serve as auxiliary sprin supports and the inner sides of which pre erably slope downwardly and inwardly in approximately the same direction as the inclined end portions of said tension member, thereby providing supplemental truss portions for said tension member, said supplemental truss portions at the same time providing means for interlocking the associated spring plank with the frame.

Another object of my invention is to provide an integral side frame with a tension member serving to support the bolster springs at a plurality of elevations and for thatl purpose being provided with lupwardly embossed end portions adjacent the bolster guide columns, said upwardly embossed portions being formed with an upper horizontal web and inclined inner sides providing a reinforcement adjacent the junction between the horizontal and inclined portions of the tension member, the ends of said reinforcement tapering with respect to said tension member and merging therewith.

Other objects and advantages of the invention relating to the particular arrangement and construction of the various parts will become .apparent as the description proceeds.

Referring to the drawings illustrating my invention, the scope whereof is defined by the appended claims: l

Figure 1 is a side elevation of a truck particularly showing a portion of aside frame thereof partly in longitudinal section, with the associated spring plank, bolster and nest of bolster springs.

Figure 2 is a horizontal'sectional view on the line 2 2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a transverse sectional view on Athe line 3 3 of Figure 2, looking in the direction of the arrows. l

Figure 4 is a plan of the associated spring plank.

Referring to the drawings in detail,- like parts being designated by like reference characters, there is shown a portion of a truck comprising side frames 1 preferably formed of cast steel, although it will be obvious that I do not wish to be limited to such construction. Each frame 1 comprises a compression member 2, a tension member 3, and bolster guide columns or strut portions 4 spacing intermediate port-ions of said compression and tension members and leaving a window opening 5 therebetween.' The compression and tension members at the endsthereof join with one another and may be either formed with integral journal boxes or be adapted for connection with journal boxes in any desired manner as will be understood by those skilled in the art.

The tension memberI 3 between the bolster columns 4; is in the present embodiment generally box-shape in cross-section and comprises an upper web 6 forming a spring plank seat portion, a lower web 7 and side webs 8. In order to rovide the necessary area for supporting t e nest of springs 9, illustrated diagrammatically in dot and dash lines, the web 6 is preferably extended beyond the side webs 8 and reinforced with respect thereto by triangular gussets 10. The tension member in the present embodiment involves a relatively short central horizontal portion 11 joining with inclined end portions 12 substantial distances inwardly of the bolster guide columnsc whereby the junctions with said bolster guide columns are elevated a substantial distance above the main spring supporting web 6 of the tension member.

The nest of bolster springs in the present embodiment involves a main tive-unit nest supported on the s ring plank 13 which extends between the fi'ames of the truck and in turn rests on the upper web 6 of the tension member which provides a spring plank seat portion, the upper surface of which may be provided with the usual squaring lugs 14, and auxiliary springs 15 disposed longitudinally on either side of the main nest of springs. For supporting said auxiliary springs the upper web 6 of the tension member is upwardly convoluted or provided with bosses 16, the outer ends of which extendfrom approximately the junctions of the inner webs of the bolster guide columns and the 'inclined upper webs 6 of the tension member 3, said bosses 16 comprising horizontal web portions extending inwardly and each of suilicient area for properly su porting a spring unit 15. The upper sur ace of each boss may desirably be provided with a spring centering lug 17. The inner sides of said auxiliary spring supporting portions 16 are preferably curved to correspond with the outline of the associated springs and joined to the main horizontal portions of the web 6 by downwardly and inwardly inclined webs 18, said webs preferably extending approximately parallel to the inclined end portions 12 of the tension member and also preferably `decreasing or tapering in width in order to pass between the adjacent transversely spaced spring units of the main nest of springs 9, preferably intersecting the transverse axial planes of' said spaced units and finally merging with the web 6 of the tension member. The associated spring plank 13 is formed to cooperate and interlock with the bosses 16 and particularly the sloping inner sides 18 thereof and for that purpose is provided with upwardly and outwardly tapering corrugations which adapt said plank for snugly fitting over the sloping sides 18 of the bosses 16.

The associated bolster 1Q is formed with a main portion 20, the lower surface of which rests upon and is supported by the main nest of springs 9 and side portions 21, the lower surfaces of which are elevated with respect to the lower surfaces of the lnain -portion 20 an amount corresponding to the difference in elevation between the auxiliary spring supporting bosses 16, and the mainspring supporting portions on the spring plank 13, whereby the auxiliary springs 15 maybe of a height corresponding with the height of the main springs 9.

From the foregoing disclosure it will be apparent that I have devised aside frame in which the tension member between the bolster guide columns is reinforced adjacent the junctions between the horizontal central portion and the inclined end portions thereof y upward embossmentsu which not only serve for` supporting auxiliary springs, but

intermediate portions of said members and leaving a` window opening therebetween, a web of the tension member beneath the window opening forming spring supporting portions on a plurality of levels, and a sloping web joining said spring supporting portions.

2. A side frame comprising a compression member, a tension member, struts spacing intermediate portions of said members and leaving a window opening therebetween, the upper web of the tension member beneath the window opcningforming spring supporting portions arranged atdifferent levels, and sloping webs joining said spring supporting portions at different levels.

3. A side frame comprising a compression member, a tension member, struts spacing intermediate portions of said members and space d to leave a window opening therebetween, the upper web of said tension member beneath the window opening providing a main spring seating portion, portions of said web adjacent the bolster guide columns being offset upwardly to provide auxiliary spring seating portions, said auxiliary spring seating portions being joined to the main spring seating portions by webs sloping downwardly and inwardly toward each other.

4. A side frame comprising a compression member, a tension member, struts s acing intermediate portions of said mem ers and leaving a window opening therebetween, said tension member beneath the window opening having a substantially horizontal central portion and upwardly and outwardly .-inclinedf"ex1d portions, said central portion being formed with an upper web serving for the support of a main group of bolster springs, and the inclined leaving a window opening therebetween,.

said tension member' comprising inclined end portions extending inwardly beyond said struts and connected by a substantially horizontal central portion, the upper web of said central portionl being widened for the support of bolster springs and. provided with portions upwardly offset to approximately the intersection of the inclined end portions with the struts, said upwardly off set portions serving for the support of auxiliary springs and the inner edges thereof being joined to the main supporting portion by webs extending approximately parallel with the inclined end portions of the tension member.

6. A side frame comprising a compression member, a tension member, bolster guide co l unms spacing intermediate portions thereof and leaving a window opening therebetween, that portion of the tension member beneath the window opening comprising a horizontal central portion and inclined end portions, the junctions between said horizontal and inclined end portions being reinforced by 11pwardly embossed lportions involving horizontal portions extending inwardly from the junctions between the bolster guide columns and tension member and serving for the support of auxiliary bolster springs, and downwardly and .inwardly inclined portions con-v necting said auxiliary spring supporting portions with the upper portion of the tension member.

7. A side frame comprising a tension member constructed as a central horizontal beam portion supported at each end by diagonal end portions with the junctions between said central and end portions reinforced by upstanding hollow bosses, the upper surfaces of which assist in the support of the bolster springs and the inner sides of which slope downwardly and inwardly to join with the main portionof the tension member.

8. In a car truck, in combination, a Side frame formed with compression and tension members spaced at intermediate portions thereof by bolster guide columns and leaving a window opening therebetween, the tension member beneath the window opening being formed with a spring seating portion serving for the support of a nest of springs approxi mately square in plan, auxiliary spring supporting portions being provided adjacent the bolster guide columns above the level of the main spring portion and joined thereto by downwardly and inwardly inclined webs'extending betweeny the transversely spaced springs 'of the main nest of springs.

9. In a ear truck, in combination, a side frame 'comprising a compiressionmember, a

' tension member, bolster guide columns spacing intermediate portions of said members and leaving a window opening therebetween, that portion of the tension member beneath the window opening involving a central -horizontal portion and inclined end portions extending therefrom beneath the bolster guide columns, embossments reinforcing the junctions between. the horizontal central por- `tion and the inclined end portions with the upper surfaces thereof serving for the support of auxiliary'bolster springs, the sides thereof sloping downwardly and inwardly lto join withV the horizontal portion of the tension member, a spring plank lsupported on said tension member and formed with corrugations in the sides thereof interlockingV with the sloping sides of the embossments to maintain said plank in proper relation with respect to the frame, a nest of springs supported on said spring plank, auxiliary springs supported on said embossments, and 'a bolster with a main central portion supported on the main nest of springs and with elevated side portions resting on said auxiliary springs.

10. In a car truck, in combination, a side frame comprising an upper compression member, a lower Vtension member and column's, a spring assemblage supported on said tension member between said columns, said assemblage comprising two end springs and a central group of springs, that part of the tension member on which said end springs restbeing at a higher level than the intermediate. part on which said central group rests and being joined` to said intermediate part by inclined webs extending between transversely spaced springs of said .Y

central group.

11. In a car truck, in combination, side frames each comprising an upper compresjsion, a lower tension member, and columns,

a spring seat on each of said tension members betwe'en saldcolumns, said spring seat having end sections elevated above the central section thereof, said central section being of greater width transversely of said side frame than sald end sections, an as .semblage of springs between said columns springs, and a bolster resting upon said as-` semblage of springs.

12. In a car truck, in. combination, a side frame comprising upper and lower members and columns, a spring plank supported on sald lower member between said columns, an assemblage of springs between sald columns,

the intermediate springs of said assemblage resting on said spring plank and the outer springs resting on said lower member outside of said spring plank on upwardly em- 5 bossed portions thereof2 said upwardly embossed portions being jolned to the main portion of said lower member by downwardly and inwardly inclined side portions, said spring pla-nk being correspondingly embossed to interlock with said inclined side 10 portions.

In testlmony whereof I affix my signature.

BYERS W. KABEL. 

